Finding the Third Proportional to 21,221,973 and 45,469,287

Step by Step Solution

1. Step 1: Write the proportion equation
   21,221,973 : 45,469,287 = 45,469,287 : x
2. Step 2: Convert to fraction form
   21,221,973/45,469,287 = 45,469,287/x
3. Step 3: Cross multiply
   21,221,973x = 45,469,287 × 45,469,287
4. Step 4: Simplify right side
   21,221,973x = 2,067,456,060,288,369
5. Step 5: Solve for x
   x = 2,067,456,060,288,369/21,221,973
6. Step 6: Final answer
   x = 97,420,539.56